Cotton t-shirts are great for watching the game, but once your effort level goes up, cotton goes right out the door. That is why we carry a great selection of short sleeve performance shirts that wick moisture and dry quickly keeping you comfortable and safe when pushing your limits. With many of our short sleeve synthetic performance shirts, they have the ability to dry quickly and keep sweat from settling on your skin eliminating chafing and decreasing discomfort. Rock/Creek's choice of performance wool shirts regulates your temperature naturally keeping you cool when its hot or hot when its cool. Merino wool short sleeve shirts are designed for activities like climbing, day hiking or anything that is more continuous and not aerobically intense. Check out performance shirts from Patagonia, Smartwool, The North Face and many more.